*/
	public static function shortcode_wrapper(
		$function,
		$atts = array(),
		$wrapper = array(
			'class'  => 'lifterlms',
			'before' => null,
			'after'  => null,
		) ) {

			ob_start();

			$before = empty( $wrapper['before'] ) ? '<div class="' . esc_attr( $wrapper['class'] ) . '">' : $wrapper['before'];
			$after  = empty( $wrapper['after'] ) ? '</div>' : $wrapper['after'];

			echo $before;
			call_user_func( $function, $atts );
			echo $after;

			return ob_get_clean();